1 /* $NetBSD: defs.h,v 1.27 2012/02/12 13:56:56 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgment: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)defs.h 8.1 (Berkeley) 6/5/93 36 * 37 * $FreeBSD$ 38 * "Revision: 2.27 " 39 */ 40 41 /* Definitions for RIPv2 routing process. 42 * 43 * This code is based on the 4.4BSD `routed` daemon, with extensions to 44 * support: 45 * RIPv2, including variable length subnet masks. 46 * Router Discovery 47 * aggregate routes in the kernel tables. 48 * aggregate advertised routes. 49 * maintain spare routes for faster selection of another gateway 50 * when the current gateway dies. 51 * timers on routes with second granularity so that selection 52 * of a new route does not wait 30-60 seconds. 53 * tolerance of static routes. 54 * tell the kernel hop counts 55 * do not advertise if ipforwarding=0 56 * 57 * The vestigial support for other protocols has been removed. There 58 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 59 * other protocols. The result is far smaller, faster, cleaner, and 60 * perhaps understandable. 61 * 62 * The accumulation of special flags and kludges added over the many 63 * years have been simplified and integrated. 64 */ 65 66 #include <stdio.h> 67 #include <netdb.h> 68 #include <stdlib.h> 69 #include <unistd.h> 70 #include <errno.h> 71 #include <string.h> 72 #ifdef sgi 73 #include <strings.h> 74 #include <bstring.h> 75 #endif 76 #include <stdarg.h> 77 #include <syslog.h> 78 #include <time.h> 79 #include <sys/cdefs.h> 80 #include <sys/time.h> 81 #include <sys/types.h> 82 #include <sys/param.h> 83 #include <sys/ioctl.h> 84 #include <sys/sysctl.h> 85 #include <sys/socket.h> 86 #ifdef sgi 87 #define _USER_ROUTE_TREE 88 #include <net/radix.h> 89 #else 90 #include "radix.h" 91 #define UNUSED __attribute__((unused)) 92 #define PATTRIB(f,l) __attribute__((format (printf,f,l))) 93 #endif 94 #include <net/if.h> 95 #include <net/route.h> 96 #include <net/if_dl.h> 97 #include <netinet/in.h> 98 #include <arpa/inet.h> 99 #define RIPVERSION RIPv2 100 #include <protocols/routed.h> 101 102 #ifndef __RCSID 103 #define __RCSID(_s) static const char rcsid[] UNUSED = _s 104 #endif 105 #ifndef __COPYRIGHT 106 #define __COPYRIGHT(_s) static const char copyright[] UNUSED = _s 107 #endif 108 109 /* Type of an IP address. 110 * Some systems do not like to pass structures, so do not use in_addr. 111 * Some systems think a long has 64 bits, which would be a gross waste. 112 * So define it here so it can be changed for the target system. 113 * It should be defined somewhere netinet/in.h, but it is not. 114 */ 115 #ifdef sgi 116 #define naddr u_int32_t 117 #elif defined (__NetBSD__) 118 #define naddr u_int32_t 119 #define _HAVE_SA_LEN 120 #define _HAVE_SIN_LEN 121 #else 122 #define naddr u_long 123 #define _HAVE_SA_LEN 124 #define _HAVE_SIN_LEN 125 #endif 126 127 /* Turn on if IP_{ADD,DROP}_MEMBERSHIP and IP_MULTICAST_IF considers address 128 * within 0.0.0.0/8 as interface index. 129 */ 130 #ifdef __NetBSD__ 131 #define MCAST_IFINDEX 132 #endif 133 134 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 135 * the dstaddr of point-to-point interfaces. 136 * #define MCAST_PPP_BUG 137 */ 138 #ifdef MCAST_IFINDEX 139 #undef MCAST_PPP_BUG 140 #endif 141 142 #define DAY (24*60*60) 143 #define NEVER DAY /* a long time */ 144 #define EPOCH NEVER /* bias time by this to avoid <0 */ 145 146 /* Scan the kernel regularly to see if any interfaces have appeared or been 147 * turned off. These must be less than STALE_TIME. 148 */ 149 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 150 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 151 #define CHECK_QUIET_INTERVAL 300 /* when not */ 152 153 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 154 155 /* Metric used for fake default routes. It ought to be 15, but when 156 * processing advertised routes, previous versions of `routed` added 157 * to the received metric and discarded the route if the total was 16 158 * or larger. 159 */ 160 #define FAKE_METRIC (HOPCNT_INFINITY-2) 161 162 163 /* Router Discovery parameters */ 164 #ifndef sgi 165 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 166 #endif 167 #define MaxMaxAdvertiseInterval 1800 168 #define MinMaxAdvertiseInterval 4 169 #define DefMaxAdvertiseInterval 600 170 #define DEF_PreferenceLevel 0 171 #define MIN_PreferenceLevel 0x80000000 172 173 #define MAX_INITIAL_ADVERT_INTERVAL 16 174 #define MAX_INITIAL_ADVERTS 3 175 #define MAX_RESPONSE_DELAY 2 176 177 #define MAX_SOLICITATION_DELAY 1 178 #define SOLICITATION_INTERVAL 3 179 #define MAX_SOLICITATIONS 3 180 181 182 /* Bloated packet size for systems that simply add authentication to 183 * full-sized packets 184 */ 185 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 186 /* typical packet buffers */ 187 union pkt_buf { 188 char packet[OVER_MAXPACKETSIZE*2]; 189 struct rip rip; 190 }; 191 192 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 193 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 194 #define IF_NAME_LEN (GNAME_LEN+15) 195 196 /* No more routes than this, to protect ourself in case something goes 197 * whacko and starts broadcasting zillions of bogus routes. 198 */ 199 #define MAX_ROUTES (128*1024) 200 extern int total_routes; 201 202 /* Main, daemon routing table structure 203 */ 204 struct rt_entry { 205 struct radix_node rt_nodes[2]; /* radix tree glue */ 206 u_int rt_state; 207 # define RS_IF 0x001 /* for network interface */ 208 # define RS_NET_INT 0x002 /* authority route */ 209 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 210 # define RS_NO_NET_SYN (RS_LOCAL | RS_IF) 211 # define RS_SUBNET 0x008 /* subnet route from any source */ 212 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 213 # define RS_MHOME 0x020 /* from -m */ 214 # define RS_STATIC 0x040 /* from the kernel */ 215 # define RS_RDISC 0x080 /* from router discovery */ 216 struct sockaddr_in rt_dst_sock; 217 naddr rt_mask; 218 struct rt_spare { 219 struct interface *rts_ifp; 220 naddr rts_gate; /* forward packets here */ 221 naddr rts_router; /* on the authority of this router */ 222 char rts_metric; 223 u_short rts_tag; 224 time_t rts_time; /* timer to junk stale routes */ 225 u_int rts_de_ag; /* de-aggregation level */ 226 #define NUM_SPARES 4 227 } rt_spares[NUM_SPARES]; 228 u_int rt_seqno; /* when last changed */ 229 char rt_poison_metric; /* to notice maximum recently */ 230 time_t rt_poison_time; /* advertised metric */ 231 }; 232 #define rt_dst rt_dst_sock.sin_addr.s_addr 233 #define rt_ifp rt_spares[0].rts_ifp 234 #define rt_gate rt_spares[0].rts_gate 235 #define rt_router rt_spares[0].rts_router 236 #define rt_metric rt_spares[0].rts_metric 237 #define rt_tag rt_spares[0].rts_tag 238 #define rt_time rt_spares[0].rts_time 239 #define rt_de_ag rt_spares[0].rts_de_ag 240 241 #define HOST_MASK 0xffffffff 242 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 243 244 /* age all routes that 245 * are not from -g, -m, or static routes from the kernel 246 * not unbroken interface routes 247 * but not broken interfaces 248 * nor non-passive, remote interfaces that are not aliases 249 * (i.e. remote & metric=0) 250 */ 251 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 252 | RS_NET_SYN | RS_RDISC)) \ 253 && (!((rt_state) & RS_IF) \ 254 || (ifp) == 0 \ 255 || (((ifp)->int_state & IS_REMOTE) \ 256 && !((ifp)->int_state & IS_PASSIVE)))) 257 258 /* true if A is better than B 259 * Better if 260 * - A is not a poisoned route 261 * - and A is not stale 262 * - and A has a shorter path 263 * - or is the router speaking for itself 264 * - or the current route is equal but stale 265 * - or it is a host route advertised by a system for itself 266 */ 267 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 268 && now_stale <= (A)->rts_time \ 269 && ((A)->rts_metric < (B)->rts_metric \ 270 || ((A)->rts_gate == (A)->rts_router \ 271 && (B)->rts_gate != (B)->rts_router) \ 272 || ((A)->rts_metric == (B)->rts_metric \ 273 && now_stale > (B)->rts_time) \ 274 || (RT_ISHOST(rt) \ 275 && (rt)->rt_dst == (A)->rts_router \ 276 && (A)->rts_metric == (B)->rts_metric))) 277 278 279 /* An "interface" is similar to a kernel ifnet structure, except it also 280 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 281 */ 282 struct interface { 283 struct interface *int_next, **int_prev; 284 struct interface *int_ahash, **int_ahash_prev; 285 struct interface *int_bhash, **int_bhash_prev; 286 struct interface *int_rlink, **int_rlink_prev; 287 struct interface *int_nhash, **int_nhash_prev; 288 char int_name[IF_NAME_LEN+1]; 289 u_short int_index; 290 naddr int_addr; /* address on this host (net order) */ 291 naddr int_brdaddr; /* broadcast address (n) */ 292 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 293 naddr int_net; /* working network # (host order)*/ 294 naddr int_mask; /* working net mask (host order) */ 295 naddr int_ripv1_mask; /* for inferring a mask (n) */ 296 naddr int_std_addr; /* class A/B/C address (n) */ 297 naddr int_std_net; /* class A/B/C network (h) */ 298 naddr int_std_mask; /* class A/B/C netmask (h) */ 299 int int_rip_sock; /* for queries */ 300 int int_if_flags; /* some bits copied from kernel */ 301 u_int int_state; 302 time_t int_act_time; /* last thought healthy */ 303 time_t int_query_time; 304 u_short int_transitions; /* times gone up-down */ 305 char int_metric; 306 u_char int_d_metric; /* for faked default route */ 307 u_char int_adj_inmetric; /* adjust advertised metrics */ 308 u_char int_adj_outmetric; /* instead of interface metric */ 309 struct int_data { 310 u_int ipackets; /* previous network stats */ 311 u_int ierrors; 312 u_int opackets; 313 u_int oerrors; 314 #ifdef sgi 315 u_int odrops; 316 #endif 317 time_t ts; /* timestamp on network stats */ 318 } int_data; 319 # define MAX_AUTH_KEYS 5 320 struct auth { /* authentication info */ 321 u_int16_t type; 322 u_char key[RIP_AUTH_PW_LEN]; 323 u_char keyid; 324 time_t start, end; 325 } int_auth[MAX_AUTH_KEYS]; 326 /* router discovery parameters */ 327 int int_rdisc_pref; /* signed preference to advertise */ 328 int int_rdisc_int; /* MaxAdvertiseInterval */ 329 int int_rdisc_cnt; 330 struct timeval int_rdisc_timer; 331 }; 332 333 /* bits in int_state */ 334 #define IS_ALIAS 0x0000001 /* interface alias */ 335 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 336 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 337 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 338 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 339 #define IS_CHECKED 0x0000020 /* still exists */ 340 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 341 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 342 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 343 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 344 #define IS_BROKE 0x0000400 /* seems to be broken */ 345 #define IS_SICK 0x0000800 /* seems to be broken */ 346 #define IS_DUP 0x0001000 /* has a duplicate address */ 347 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 348 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 349 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 350 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 351 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 352 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 353 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 354 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 355 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 356 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 357 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 358 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 359 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 360 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 361 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 362 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 363 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 364 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 365 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 366 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 367 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 368 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 369 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 370 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 371 372 #define iff_up(f) ((f) & IFF_UP) 373 374 375 /* Information for aggregating routes */ 376 #define NUM_AG_SLOTS 32 377 struct ag_info { 378 struct ag_info *ag_fine; /* slot with finer netmask */ 379 struct ag_info *ag_cors; /* more coarse netmask */ 380 naddr ag_dst_h; /* destination in host byte order */ 381 naddr ag_mask; 382 naddr ag_gate; 383 naddr ag_nhop; 384 char ag_metric; /* metric to be advertised */ 385 char ag_pref; /* aggregate based on this */ 386 u_int ag_seqno; 387 u_short ag_tag; 388 u_short ag_state; 389 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 390 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 391 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 392 #define AGS_REDUN1 0x008 393 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 394 == (AGS_REDUN0 | AGS_REDUN1)) 395 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 396 #define AGS_IF 0x020 /* for an interface */ 397 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 398 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 399 * has the finer netmask */ 400 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 401 * has the coarser netmasks */ 402 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 403 404 /* some bits are set if they are set on either route */ 405 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 406 AGS_SUPPRESS | AGS_CORS_GATE) 407 }; 408 409 410 /* parameters for interfaces */ 411 extern struct parm { 412 struct parm *parm_next; 413 char parm_name[IF_NAME_LEN+1]; 414 naddr parm_net; 415 naddr parm_mask; 416 417 u_char parm_d_metric; 418 u_char parm_adj_inmetric; 419 u_char parm_adj_outmetric; 420 u_int parm_int_state; 421 int parm_rdisc_pref; /* signed IRDP preference */ 422 int parm_rdisc_int; /* IRDP advertising interval */ 423 struct auth parm_auth[MAX_AUTH_KEYS]; 424 } *parms; 425 426 /* authority for internal networks */ 427 extern struct intnet { 428 struct intnet *intnet_next; 429 naddr intnet_addr; /* network byte order */ 430 naddr intnet_mask; 431 char intnet_metric; 432 } *intnets; 433 434 /* defined RIPv1 netmasks */ 435 extern struct r1net { 436 struct r1net *r1net_next; 437 naddr r1net_net; /* host order */ 438 naddr r1net_match; 439 naddr r1net_mask; 440 } *r1nets; 441 442 /* trusted routers */ 443 extern struct tgate { 444 struct tgate *tgate_next; 445 naddr tgate_addr; 446 #define MAX_TGATE_NETS 32 447 struct tgate_net { 448 naddr net; /* host order */ 449 naddr mask; 450 } tgate_nets[MAX_TGATE_NETS]; 451 } *tgates; 452 453 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 454 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 455 456 /* common output buffers */ 457 extern struct ws_buf { 458 struct rip *buf; 459 struct netinfo *n; 460 struct netinfo *base; 461 struct netinfo *lim; 462 enum output_type type; 463 } v12buf, v2buf; 464 465 extern pid_t mypid; 466 extern naddr myaddr; /* main address of this system */ 467 468 extern int stopint; /* !=0 to stop */ 469 470 extern int sock_max; 471 extern int rip_sock; /* RIP socket */ 472 extern struct interface *rip_sock_mcast; /* current multicast interface */ 473 extern int rt_sock; /* routing socket */ 474 extern int rt_sock_seqno; 475 extern int rdisc_sock; /* router-discovery raw socket */ 476 477 extern int seqno; /* sequence number for messages */ 478 extern int supplier; /* process should supply updates */ 479 extern int supplier_set; /* -s or -q requested */ 480 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 481 extern int ridhosts; /* 1=reduce host routes */ 482 extern int mhome; /* 1=want multi-homed host route */ 483 extern int advertise_mhome; /* 1=must continue advertising it */ 484 extern int auth_ok; /* 1=ignore auth if we do not care */ 485 486 extern struct timeval clk; /* system clock's idea of time */ 487 extern struct timeval epoch; /* system clock when started */ 488 extern struct timeval now; /* current idea of time */ 489 extern time_t now_stale; 490 extern time_t now_expire; 491 extern time_t now_garbage; 492 493 extern struct timeval next_bcast; /* next general broadcast */ 494 extern struct timeval age_timer; /* next check of old routes */ 495 extern struct timeval no_flash; /* inhibit flash update until then */ 496 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 497 extern int rdisc_ok; /* using solicited route */ 498 499 extern struct timeval ifinit_timer; /* time to check interfaces */ 500 501 extern naddr loopaddr; /* our address on loopback */ 502 extern int tot_interfaces; /* # of remote and local interfaces */ 503 extern int rip_interfaces; /* # of interfaces doing RIP */ 504 extern struct interface *ifnet; /* all interfaces */ 505 extern struct interface *remote_if; /* remote interfaces */ 506 extern int have_ripv1_out; /* have a RIPv1 interface */ 507 extern int have_ripv1_in; 508 extern int need_flash; /* flash update needed */ 509 extern struct timeval need_kern; /* need to update kernel table */ 510 extern u_int update_seqno; /* a route has changed */ 511 512 extern int tracelevel, new_tracelevel; 513 #define MAX_TRACELEVEL 4 514 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 515 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 516 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 517 #define TRACEACTIONS (tracelevel != 0) 518 extern FILE *ftrace; /* output trace file */ 519 extern char inittracename[MAXPATHLEN+1]; 520 521 extern struct radix_node_head *rhead; 522 523 524 #ifdef sgi 525 /* Fix conflicts */ 526 #define dup2(x,y) BSDdup2(x,y) 527 #endif /* sgi */ 528 529 extern void fix_sock(int, const char *); 530 extern void fix_select(void); 531 extern void rip_off(void); 532 extern void rip_on(struct interface *); 533 534 extern void bufinit(void); 535 extern int output(enum output_type, struct sockaddr_in *, 536 struct interface *, struct rip *, int); 537 extern void clr_ws_buf(struct ws_buf *, struct auth *); 538 extern void rip_query(void); 539 extern void rip_bcast(int); 540 extern void supply(struct sockaddr_in *, struct interface *, 541 enum output_type, int, int, int); 542 543 extern void msglog(const char *, ...) PATTRIB(1,2); 544 struct msg_limit { 545 time_t reuse; 546 struct msg_sub { 547 naddr addr; 548 time_t until; 549 # define MSG_SUBJECT_N 8 550 } subs[MSG_SUBJECT_N]; 551 }; 552 extern void msglim(struct msg_limit *, naddr, 553 const char *, ...) PATTRIB(3,4); 554 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 555 __dead extern void logbad(int, const char *, ...) PATTRIB(2,3); 556 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 557 #ifdef DEBUG 558 #define DBGERR(dump,msg) BADERR(dump,msg) 559 #else 560 #define DBGERR(dump,msg) LOGERR(msg) 561 #endif 562 extern char *naddr_ntoa(naddr); 563 extern const char *saddr_ntoa(const struct sockaddr *); 564 565 extern void *rtmalloc(size_t, const char *); 566 extern void timevaladd(struct timeval *, struct timeval *); 567 extern void intvl_random(struct timeval *, u_long, u_long); 568 extern int getnet(char *, naddr *, naddr *); 569 extern int gethost(char *, naddr *); 570 extern void gwkludge(void); 571 extern const char *parse_parms(char *, int); 572 extern const char *check_parms(struct parm *); 573 extern void get_parms(struct interface *); 574 575 extern void lastlog(void); 576 extern void trace_close(int); 577 extern void set_tracefile(const char *, const char *, int); 578 extern void tracelevel_msg(const char *, int); 579 extern void trace_off(const char*, ...) PATTRIB(1,2); 580 extern void set_tracelevel(void); 581 extern void trace_flush(void); 582 extern void trace_misc(const char *, ...) PATTRIB(1,2); 583 extern void trace_act(const char *, ...) PATTRIB(1,2); 584 extern void trace_pkt(const char *, ...) PATTRIB(1,2); 585 extern void trace_add_del(const char *, struct rt_entry *); 586 extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 587 const char *); 588 extern void trace_if(const char *, struct interface *); 589 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 590 struct rt_spare *); 591 extern void trace_rip(const char*, const char*, struct sockaddr_in *, 592 struct interface *, struct rip *, int); 593 extern char *addrname(naddr, naddr, int); 594 extern char *rtname(naddr, naddr, naddr); 595 596 extern void rdisc_age(naddr); 597 extern void set_rdisc_mg(struct interface *, int); 598 extern void set_supplier(void); 599 extern void if_bad_rdisc(struct interface *); 600 extern void if_ok_rdisc(struct interface *); 601 extern void read_rip(int, struct interface *); 602 extern void read_rt(void); 603 extern void read_d(void); 604 extern void rdisc_adv(void); 605 extern void rdisc_sol(void); 606 607 extern void sigalrm(int); 608 extern void sigterm(int); 609 610 extern void sigtrace_on(int); 611 extern void sigtrace_off(int); 612 613 extern void flush_kern(void); 614 extern void age(naddr); 615 616 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 617 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 618 u_short, u_short, void (*)(struct ag_info *)); 619 extern void del_static(naddr, naddr, naddr, int); 620 extern void del_redirects(naddr, time_t); 621 extern struct rt_entry *rtget(naddr, naddr); 622 extern struct rt_entry *rtfind(naddr); 623 extern void rtinit(void); 624 extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 625 extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 626 extern void rtdelete(struct rt_entry *); 627 extern void rts_delete(struct rt_entry *, struct rt_spare *); 628 extern void rtbad_sub(struct rt_entry *); 629 extern void rtswitch(struct rt_entry *, struct rt_spare *); 630 extern void rtbad(struct rt_entry *); 631 632 #define S_ADDR(x) (((const struct sockaddr_in *)(x))->sin_addr.s_addr) 633 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 634 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 635 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 636 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 637 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 638 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 639 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 640 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 641 int); 642 643 extern naddr std_mask(naddr); 644 extern naddr ripv1_mask_net(naddr, struct interface *); 645 extern naddr ripv1_mask_host(naddr,struct interface *); 646 #define on_net_h(a,net,mask) ((((a) ^ (net)) & (mask)) == 0) 647 #define on_net(a,net,mask) on_net_h(ntohl(a),net,mask) 648 extern int check_dst(naddr); 649 extern struct interface *check_dup(naddr, naddr, naddr, int); 650 extern int check_remote(struct interface *); 651 extern int addrouteforif(struct interface *); 652 extern void ifinit(void); 653 extern int walk_bad(struct radix_node *, struct walkarg *); 654 extern int if_ok(struct interface *, const char *); 655 extern void if_sick(struct interface *); 656 extern void if_bad(struct interface *); 657 extern void if_link(struct interface *); 658 extern struct interface *ifwithaddr(naddr, int, int); 659 extern struct interface *ifwithname(char *, naddr); 660 extern struct interface *ifwithindex(u_short, int); 661 extern struct interface *iflookup(naddr); 662 663 extern struct auth *find_auth(struct interface *); 664 extern void end_md5_auth(struct ws_buf *, struct auth *); 665 666 #if defined(__FreeBSD__) || defined(__NetBSD__) 667 #include <md5.h> 668 #else 669 #define MD5_DIGEST_LEN 16 670 typedef struct { 671 u_int32_t state[4]; /* state (ABCD) */ 672 u_int32_t count[2]; /* # of bits, modulo 2^64 (LSB 1st) */ 673 unsigned char buffer[64]; /* input buffer */ 674 } MD5_CTX; 675 extern void MD5Init(MD5_CTX*); 676 extern void MD5Update(MD5_CTX*, u_char*, u_int); 677 extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*); 678 #endif 679